I spend a lot of time thinking about it, and I'm using some precious design downtime to knit several simple projects that illustrate different principles of color theory.
Currently thinking about: Cold-warm contrast and contrast of saturation, with minimal light-dark contrast.
I've recently acquired some new research and inspirational material.
Soon I'll be not only experimenting with it, I'll also be teaching it at Fibre Space this May! If you live in the DC area, this workshop, followed by an Albers Square workshop, is going to be off the hook... picture a big pile of fingering-weight yarns in different colors to use for experimental swatches (for you to keep, duh), a big pile of my own color-theory-based projects, a full set of Color Aid cards, some great books, and a lot of advice.
Now that I'm back to editing full-time, I splurged on a haircut. After discussing the various mo- and faux-hawk styles available to me, my stylist and I decided to go with something between "David Beckham" or the more extreme "wannabe punk bands from the 2000s like that drummer from Blink 182" (yuck). I think it's pretty spot-on.